2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/137442In this contribution, I discuss some basic techniques that can be used to simulate radiative transfer through porous media. As specific examples, I consider scattering transfer through a clumped slab, and X-ray emission line formation in a clumped wind.3 pages, 2 figures, to appear in proceedings of "Clumping in Hot Star Winds" conference (Potsdam, Germany, June 2007)Astrophysicstext